We present moderate-resolution CCD spectra and R photometry for seven KP2001 stars. We revised the spectral classification of the stars in the range λ λ3900 − 8500Å . On the bases of light curves of the NSVS (Northern Sky Variability Survey) database, we classify KP2001-18 as a semiregular and KP2001-176 as Mira type variables. For all observed objects NSVS phase-dependence light curve analysis and variability type classification was performed with the VStar Software. Using the period-luminosity relation, we estimated the absolute bolometric Mbol and K-band Mk magnitudes as well as the distances to variables.
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Published in Astrofizika, Vol. 58, No. 4, pp. 541-551 (November 2015).
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Petrosyan, G.V., Rossi, C., Gaudenzi, S. et al. Oxygen-Rich Cool Stars in the Cepheus Region. New Observations. III. Astrophysics 58, 503–511 (2015). https://doi.org/10.1007/s10511-015-9403-8
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DOI: https://doi.org/10.1007/s10511-015-9403-8